Coreopsis plant named &#39;URIBL02&#39;

ABSTRACT

A new cultivar of hybrid  Coreopsis  plant named, ‘URIBL02’, that is characterized by its dwarf plant habit, by its large inflorescences, its ray florets ray florets that are light red-purple in color with a yellow base, and its disk florets that are orange-red in color.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is co-pending with U.S. Plant Patent Applications filed for plants derived from the same breeding program that is entitled Coreopsis Plant Named ‘URIBL01’ (U.S. Plant Patent Application pending)*. *Applicant gives the examiner the authority to replace U.S. Plant Patent Application pending with an Application No. or Patent No. if applicable and delete this statement.

BOTANICAL CLASSIFICATION

Coreopsis rosea×Coreopsis verticillata

VARIETY DENOMINATION

‘URIBL02’

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Coreopsis plant, botanically of hybrid origin and known as Coreopsis ‘URIBL02’ and will be referred to hereinafter by its cultivar name, ‘URIBL02’. The new cultivar of Coreopsis is an herbaceous perennial grown for landscape and container use.

The new invention arose from an ongoing controlled breeding program in Icheon-si, Korea. The objective of the breeding program is to develop hybrid cultivars of Coreopsis with unique flower colors and dwarf plant habit.

The new cultivar arose as a mutation using gamma radiation of un-rooted cuttings of ‘Limerock Ruby’ (U.S. Plant Pat. No. 15,455) in January of 2010. ‘URIBL02’ was selected in September 2010 as a single unique plant amongst the resulting seedlings.

Asexual propagation of the new cultivar was first accomplished by stem cuttings under the direction of the Inventor in Icheon-si, Korea in September of 2010. Asexual propagation by stem cuttings has determined that the characteristics of the new cultivar are stable and are reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and represent the characteristics of the new cultivar. These attributes in combination distinguish ‘URIBL02’ as unique cultivar of Coreopsis.

1. ‘URIBL02’ exhibits a dwarf plant habit.

2. ‘URIBL02’ exhibits large inflorescences.

3. ‘URIBL02’ exhibits ray florets that are light red-purple in color with a yellow base.

4. ‘URIBL02’ exhibits disk florets that are orange-red in color.

The parent plant of ‘URIBL02’, ‘Limerock Ruby’, differs from ‘URIBL02’ in having a taller plant height and wider plant spread, in having inflorescences that are smaller in size with ray florets that are smaller in size. ‘URIBL02’ can be compared to ‘URIBL01’. ‘URIBL01’ is similar to ‘URIBL02’ in having a dwarf plant habit. ‘URIBL01’ differs from ‘URIBL02’ in having ray florets that are crimson red in color, in having a slightly smaller plant size, and in having inflorescences that are slightly smaller in size.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying colored photographs illustrate the overall appearance and distinct characteristics of the new Coreopsis. The photographs were taken of a 3 month-old plant of ‘URIBL02’ as grown outdoors in Boskoop, The Netherlands. The photograph in FIG. 1 provides a side view of a plant of ‘URIBL02’ in bloom. The photograph in FIG. 2 provides a close-up view of the inflorescences of ‘URIBL02’. The photograph in FIG. 3 provides a close-up view of the foliage of ‘URIBL02’. The colors in the photographs are as close as possible with the photographic and printing technology utilized and the color values cited in the Detailed Botanical Description accurately describe the colors of the new Coreopsis.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed description of 3 month-old plants of the new cultivar as grown outdoors in 13-cm containers Boskoop, The Netherlands. The phenotype of the new cultivar may vary with variations in environmental, climatic, and cultural conditions, as it has not been tested under all possible environmental conditions. The color determination is in accordance with the 2007 RHS Colour Chart of The Royal Horticultural Society, London, England, except where general color terms of ordinary dictionary significance are used.

-   General description:     -   -   Blooming period.—Early summer to late summer in The             Netherlands.         -   Plant type.—Herbaceous perennial.         -   Plant habit.—Dwarf and upright.         -   Height and spread.—An average of 23.7 cm in height and 26.4             cm in width.         -   Cold hardiness.—At least to U.S.D.A Zone 4.         -   Diseases and pests.—No susceptibility or resistance to             diseases or pests has been observed.         -   Root description.—Fibrous when young, becoming fleshy with             age, 162D in color.         -   Propagation.—Stem cuttings.         -   Root development.—An average of 10 days for root initiation             and about 5 weeks to produce a young rooted plant in a 10-cm             container.         -   Growth rate.—Moderate. -   Stem description:     -   -   Shape.—Oval and slightly ridged.         -   Stem color.—143B.         -   Stem size.—An average of 7.3 cm in length (excluding             inflorescence) and 1.5 mm in diameter.         -   Stem surface.—Glabrous, glossy, slightly axially ribbed.         -   Stem aspect.—Upward and outward.         -   Stem strength.—Strong.         -   Branching habit.—Well-branched, an average of 38 lateral             branches.         -   Internode length.—An average of 2.4 cm. -   Foliage description:     -   -   Leaf type.—Single.         -   Leaf division.—Simple.         -   Leaf margins.—Entire to two-lobed.         -   Leaf size.—Variable; up to 4.3 cm in length and 1.7 cm in             width when entire and up to 5.4 cm in length and 4 mm in             width when two-lobed.         -   Leaf shape.—Narrow lanceolate.         -   Leaf base.—Narrow cuneate.         -   Leaf apex.—Acute.         -   Leaf venation.—Pinnate, color; upper surface 137B and lower             surface 144A.         -   Leaf attachment.—Sessile.         -   Leaf arrangement.—Opposite.         -   Leaf surface.—Both surfaces dull and glabrous.         -   Leaf color.—Young and mature upper surface; 137B and young             and mature lower surface; 143A.         -   Leaf number.—An average of 8 leaves (4 pairs) per stem. -   Inflorescence description:     -   -   Inflorescence type.—Terminal capitulae, with a single row of             ray florets surrounding disk florets in the center.         -   Lastingness of inflorescence.—An average of 3 weeks,             self-cleaning.         -   Fragrance.—Faint, of musk and straw.         -   Quantity of inflorescences.—An average of 1 per lateral             branch.         -   Inflorescence size.—An average of 4.0 cm in diameter and 1.2             cm in height, disk portion an average of 7 mm in diameter.         -   Inflorescence buds.—An average of 5 mm in depth and in             diameter, globular in shape, color; 147C with apex 168B to             168C.         -   Peduncle.—Primary; an average of 7.4 cm in length and 1 mm             in width, held straight upright, secondary; an average of             5.2 cm in length and 1 mm in width, held at an average angle             of 30° to primary peduncle, slightly glossy and glabrous on             all surfaces and 143B in color. -   Involucral bracts:     -   -   Bract number.—Two rows of 8.         -   Bract arrangement.—Rotate.         -   Bract size.—Outer bracts; an average of 3 mm in length and 2             mm in width, inner bracts; an average of 7 mm in length and             4 mm in width.         -   Bract color.—Inner bracts; 24A with base 146A and outer             bracts; 143A.         -   Bract texture.—Glabrous and slightly glossy on outer and             inner surfaces of outer and inner bracts.         -   Bract apex.—Acute on outer and inner bracts.         -   Bract base.—Broadly cuneate on outer and inner bracts.         -   Bract margins.—Entire.         -   Bract shape.—Outer bracts; narrow ovate, inner bracts;             ovate. -   Ray florets (sterile):     -   -   Number.—An average of 8 arranged primarily in one row.         -   Shape.—Obovate.         -   Size.—An average of 1.8 cm in length and 9 mm in width.         -   Apex.—Irregularly lobed with an average of 3 acute lobes,             center lobe is about 2 mm longer than the lateral lobes.         -   Base.—Rounded.         -   Margins.—Entire with apex lobed.         -   Aspect.—Held horizontal.         -   Texture.—Both surfaces; glabrous and dull, upper surface             very slightly velvety and lower surface moderately carinate.         -   Color.—Upper surface when opening; 70B to 70C with base 3C             to 3D, lower surface when opening; 73D with apex 75A to 75B             and base 2D, upper surface when fully open; 75B to 75C             marbled 76C to 76D with base 2D, lower surface when fully             open; 158D suffused with 75D base 2D, color not fading. -   Disk florets (perfect):     -   -   Shape.—Tubular, spirally arranged on disc.         -   Apex.—Acute.         -   Base.—Lower 87.5% fused into tube.         -   Number.—About 80.         -   Size.—An average of 4.5 mm in length and 1.0 mm in width at             the apex and 0.4 mm in width at the base.         -   Color.—En masse; a mix of 15B to 15C and 179A, corolla; base             of tube is 15B to 15C in color, flared portion is 179A.         -   Texture.—Both surfaces; glabrous and dull.         -   Receptacle.—An average of 1.5 mm in diameter and 1 mm in             depth, 143B in color. -   Reproductive organs:     -   -   Presence.—Disk florets are perfect, ray florets are sterile.         -   Gynoecium.—Pistil; 1, an average of 3 mm in length, style;             an average of 2.5 mm in length and 16A in color, stigma;             decurrent and 23A in color, ovary is 151C in color.         -   Androcoecium.—Stamens; 5, anther; basifixed and linear in             shape, an average of 1.5 mm in length and 203D in color,             pollen; moderate in quantity and 17B in color.         -   Fruit/seed.—No fruit or seed development was observed. 

It is claimed:
 1. A new and distinct cultivar of Coreopsis plant named ‘URIBL02’ as herein illustrated and described. 